package com.Shoping.filter;

import com.Shoping.entity.User;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(value = "/ProgramJSP/*")
public class UserFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String url = request.getRequestURL().toString();
        if(url.indexOf("admin")!=-1||url.indexOf("goods-Manage.jsp")!=-1||url.indexOf("login.jsp")!=-1 || url.indexOf("register.jsp") != -1){
            filterChain.doFilter(request,response);
        }else{
            HttpSession session = request.getSession();
            User user = (User) session.getAttribute("user");
            if(user!=null){
                filterChain.doFilter(request,response);
            }else{
                response.sendRedirect(request.getContextPath()+"/ProgramJSP/login.jsp");
            }
        }
    }

    @Override
    public void destroy() {

    }
}
